Fuel-gas mixer



(No Model.)

W. G. TAYLOR.

FUEL GAS MIXER. No. 424,738. PatentedApr. l, 1890.

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N PETERS. Phomumognpmr. washington. D c.

UNITED STATES PATENT OFFICE.

VILLIAM G. TAYLOR, OF HULTON, PENNSYLVANIA, ASSIGNOR OF THREE- EIGI-ITIIS TO FRANK M. ASIIMEAD, OF SAME PLACE, AND JOHN C. GLASS, OF OAKMONT, PENNSYLVANIA.

FU EL-GAS MIXER.

SPECIFICATION forming part of LettersPatent No. 424,738, dated April 1, 1890.

Application iiled December 20, 1889. Serial No.334,375. (No model.)

T0 all wil/0m it may cen/earn; is another pipe d, preferably of the same ma- 5o Be it known that I, VVI'LLIAM G. TAYLOR, a terial, and having a bell-mouth d. This pipe citizen of the United States, residing at Huld is preferably supported a short distance ton, county of Allegheny, State of Pennsylabove the end of the pipe b, the top of which 5 Vania, have invented certain new and useful is also beveled, as at b', to furnish an open- Improvements in Fuel-Gas Mixers, of which ing or passage p for the air between the two 5 5 the following is a specification. pipes. The upper pipe d may be supported My invention relates to a fuel-gas mixer in any desired manner, and I have shown a adapted for use with a burner designed more simple and effective way, consisting of the 1o especially as a natural-gas burner for hcatstrips or bands c, which may be of any suiting stoves, furnaces, grates, dac., although it able metal secured to the section l), and hav- 6o may be used with other gas and for other ing elongated slots at their upper ends, by purposes. which they are secured to the section d by The object of my invention is to providea means of setscrews e, or similar devices. i 5 device which shall cause a thorough mixture At the points where these strips or bands of the gas and air, so that there shall be a are secured I preferably form bosses c', so 65 moreperfectcombustion of the gas, and therethat the screws or other fastening devices fore greater economy, and at the same time may have sufficient hold and not project into to eliminate the noise and smell common to the interior of the pipes to present rough sur- 2o the usual forms of mixers and burners, and faces therein. These adjust-able bands or produce a device which is simple, cheap, strips form asubstantialand practically rigid 7o and effective, and notliable to get out of order. support or connection for the two pipes, and

To these ends my invention consists in a at the same time permit the unobstructed enfuel-gas mixer made substantially as hereintrance of the air into the bell-mouth end of 2 5 after more particularly set forth, and illusthe pipe CZ.

trated in the accompanying drawings. Mounted in the pipe d and suitably sup- 75 In the drawings, Figure l is a side View of ported in the center thereof, as by the screws a device embodying my invention shown in f', is placed a cone f, preferably made of steel place for use in connection with grate-bars. or similar material and arranged with its axis V ',o Fig. 2 is a longitudinal vertical section of the coincident to the axis of the pipes b and d and mixer. Fig. 3 is a transverse section of the with its pointover and in line with the gas- 8o mixer on the lines A B, Fig. 2. inlet c2. In the pipe d is also provided a se- In. the drawings, a represents a common ries of additional air-passages g, which are and well-known form of air-mixer attached bored or formed in the pipe at an inclination 3 5 to the end of the gas-pipe af, in which, in the to the sides thereof, so that the air entering present instance, is placed a gas-tip a2. In through the passages will be caused to im- S5 common practice this mixer is usually conpinge upon the cone near its upper portion. nected with the burner by a short piece of The surfaces of the air-passages g and of the plain wrought-iron pipe, the only point where bell-mouthed portion and tube forming the 4o the air and the gas are brought together bepassage p are polished, as are preferably all ing in the portions a surrounding the burnerthe surfaces over which the air or gas passes, 9o top. and the surfaces of the cone and support- In my invention I substitute for the ordiscrews are also rounded,so that they produce nary pipe a construction which I am now as little friction as possible to the flow of the 45 about to describe. Mounted in the mixer a air or gas.

is a short pipe b, preferably made of brass, I have shown in Fig. l the air-mixer used in 95 although other material may be used, and connection with the grate-bars G, and when so this is shown as connected to the mixer by a used I preferably place a plate h, of wrought screw-thread. Supported above the section l) or cast iron, upon the bars and insert the upper portion of the tube d through an opening therein, and a rib or flange h may be formed on the pipe d, to regulate the position of the pipe with relation to the plate. This plate acts as a shield and allows the air underneath the grate to be kept cooler, and as it is found in practice that a cool air mixing with the gas produces the best and hottest iiame this arrangement is desirable, and the shield serves another purpose-that is, preventing the flame from running down or igniting the gas in the mixer, which often Occurs in the co mmn form of mixers when the gas-pressure is light or the fire is turned down low.

The burner proper may be in any of the well-known and usual forms and sizes and is mounted upon the upper portion of the pipe d of the mixer above the grate, and is indicated by the dotted lines M.

It will be understood that while I have described what I consider to be the best embodiment of my invention, the details or construction and arrangement may be varied to suit the exigencies of any particular case Without departing from the spirit of my invention. l

By the use of this arrangement I am enabled to secure a thorough mixing of the air and gas, the air being brought into connection with the gas at three different circles or planes as it passes through the mixer, and the cone placed over and in line with the gaspassage serves to forcibly spread the gas and distribute it and thereby aid in the thorough commingling of the gas and air, and this results in the more perfect combustion, producing a much larger amount ofY heat for the'same amount of gas than with the ordinary mixers. I have also found that the noise usually attendant upon the use of such mixers and burners is almost entirely eliminated, and I' attribute this to the fact that there are no angles or edges for the air or gas to impinge upon, and the surfaces being smooth the usual roaring noise is not produced. The combustion being practically perfect thereis no smell or dirt due to the unconsumed portions or particles of carbon or other material.

What I claim, and desire to secure. by Letters Patent, is I l. The (gmbination, with the ordinary airmixer, of a tube secured thereto, a second tube supported thereon, and a cone supported in the interior of the tube to forcibly spread the gas, substantially as described.

2. The combination, with the ordinary airmixer, of a tube mounted thereon, a second tube having a bell-shaped mouth supported above the first tube, a cone supported in the tube, and inclined openings in the tube adjacent to the cone, substantially as described.

3. The combination, with the ordinary airmixer and a fuel-gas mixer consisting of two tribes connected together and having a spreading-cone and air-passages, one of the tubes being provided with a flange, of a plate adapted to be supported upon the gratebars and bearing upon said flange, substantially as described.

4. A fuel-gas mixer consisting of two tubes adjustably connected together, one of the tubes supporting a cone and having inclined air-openings adjacent to the cone, substantially as described.

5. A fuel-gas mixer consisting of a tube l), having tapering end, and tube cl, adj ustably supported above the iirst tube by strips or bands c, said tube having a bell-shaped mouth and inclined air-openings g, and a cone f, supported inside the tube, substantially as described.

G. The combination, with the tubes of a gas-mixer, of a cone axially in line with the tubes, with its point toward the gas-inlet, substantially as set forth.

In testimony whereof I have signed my name to this speciiication in the presence of two subscribing witnesses.

WILLIAM G. TAYLOR.

lVitnesses:

J As. MARSHALL, FRANK M. AsHMEAD. 

